ResearchResearch paperEvaluation & Benchmarks · Multimodal Models2 sources · Oct 8, 2026

SpaceCast-Bench: Evaluating Predictive Spatial Reasoning in Vision-Language Models

Existing spatial reasoning benchmarks mainly test spatial perception: reading off relations already visible in the input.

Key points

  • Yet real-world spatial intelligence demands predictive spatial reasoning: constructing a scene from observations, anticipating how an intervention changes it, and reasoning about the unseen outcome.
  • We introduce SpaceCast-Bench, the first benchmark to directly and diagnostically evaluate this capability.
  • Built around an observe-transform-infer framework, its 3,862 questions from 182 real-world scenes span 16 task types at three levels: static perception, local prediction, and global prediction, progressively requiring scene understanding, spatial state updating, and relational inference over unobserved outcomes.
  • Controlled analyses further reveal that bridge views are critical for integrating distributed observations, and that explicit 3D evidence benefits models more reliably than generated outcome images or videos.

Sources (2)

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Before this

  1. Oct 7, 2026Beyond Anonymous Captions: Grounding Character Identity in Video Captioning and Question Answering
  2. Oct 7, 2026Spatial Latent Reasoning for Embodied Reference Understanding
  3. Oct 7, 2026The Persona Hierarchy Model: Understanding Contextual Generalization in Fine-Tuning LLMs
  4. Oct 7, 2026Iris-3B: Going Beyond the Latent with Pixel-Space Diffusion Training, Conversion and Fine-Tuning
  5. Oct 6, 2026The Dichotomy Between Pattern Recognition and Step-by-Step Reasoning
  6. Oct 6, 2026Reading, Not Manipulating: Leveraging Router Logits for Multimodal Safety in MoE Vision-Language Models

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